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  • Title: [Features of chronic myeloid leukemia at diagnosis. Study of a series of 134 cases].
    Author: Jonte F, Barez A, Soto I, Rayón C, Carrera D, Coma A, Pérez Llanderal J, Arribas M.
    Journal: Sangre (Barc); 1992 Oct; 37(5):345-50. PubMed ID: 1293773.
    Abstract:
    PURPOSE: To analyse the clinico-biological features of 134 patients with chronic myelogenous leukaemia (CML) at presentation. MATERIAL AND METHODS: The series is comprised of 134 patients from the Asturias Central Hospital and other hospital of the region, diagnosed of CML with conventional criteria between 1970 and 1989. A retrospective study was carried out revising the clinical records and the clinico-biological data at diagnosis. Cytogenetic studies were available in 62 cases. The statistical analysis was based upon descriptive statistics and comparison of means and proportions by the chi square and Student's tests. Univariate study was also performed for several variables. RESULTS: The mean age of the group was 50 years, ranging between 2 and 81. The M/F ratio was 76/58. The commonest symptoms at onset were those secondary to hypermetabolism and splenomegaly, 8% of the patients being asymptomatic. Splenomegaly was present in 73.8% of the patients and hepatomegaly in 37.6%. The median white cell count was 132 x 10(9)/L. Absolute basophilia and eosinophilia were seen in 83% and 78% of the cases, respectively. Anaemia was found in 47.4% of the patients, usually mild, and 39% of them had nucleated red cells in peripheral blood. The median platelet count was 400 x 10(9)/L. Thrombocytosis was found in 48% of the cases, while 11% had thrombocytopenia. The mean number of blast cells in the bone marrow was 1.72%. The histopathologic study of the bone marrow revealed decreased red cells in 94.5% of the patients and decreased megakaryocytes in 29.5%; these last were increased in 50% of the patients. Increased reticulin fibres were found in 38.5% of the bone marrow samples. In addition to the Ph' chromosome, which was present in 51 patients, chromosomal abnormalities were seen in 15.6% of the cases in the chronic phase and in 69.2% in the terminal stages of the disease. Positive correlation could be established between the white cell count and the size of spleen (p < 0.001) and liver (p < 0.05), and there was a negative correlation between white blood cell count and haemoglobin rate and platelet count (p < 0.05 for both). CONCLUSIONS: (1) The analysis of this series shows that the CML cases in this region have similar characteristics to those in other western world communities (2). The mean age of this group is somewhat higher than in other series, which should be re-evaluated after discarding the Ph'-negative cases. (3) There seems to be positive correlation between leucocyte count and spleen and liver enlargement, and negative correlation between leucocyte count and haemoglobin and platelet count.
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